Water Supply (Water Fittings) Regs 1999

The Water Supply (Water Fittings) Regulations 1999 are UK regulations made under the Water Industry Act 1991 that set out requirements for water fittings to prevent waste, misuse, undue consumption, erroneous measurement and contamination of the public water supply. The regulations are enforced by the local water company, in Greater London by Thames Water. They apply to new installations, alterations and replacement of plumbing serving the public mains, with notification requirements for certain works such as new dwellings, baptismal pools and commercial supplies. Practical implications for homeowners include the need to use water fittings of an appropriate quality and to ensure backflow protection where required. Contractors registered through Watersafe can issue certificates of compliance covering completed work. The formal reference is the Water Supply (Water Fittings) Regulations 1999 (SI 1999/1148) as amended, with supporting guidance from the Water Regulations Approval Scheme.